https://released.xyz - Solo project, founder
After noticing how long it took teams to prepare and publish releases, I thought I could reduce that time by automating most of the process. Released aims to make the release portion of your Software Development Life Cycle the easiest part of your day.
Released is currently in open-alpha (meaning free for everyone!) as I use it for my personal projects:
https://remoteauth.com - Solo project, founder
Creating new SaaS applications requires a lot of bootstrap development: Users and authentication, roles and permissions, subscriptions and billing, etc. RemoteAuth aims to handle all of that for you, so you can focus on building the core of your application.